Gunfire erupted after a concert in Mississippi, resulting in at least 14 people being injured.The chief of police said the shooting happened early Sunday morning. No arrests have been made.One woman suffered a serious leg injury, but police said the other injuries are not life-threatening.Police said the shootings stemmed from an altercation between a group of people who live in Coahoma County and Tunica County. The chief said the Mississippi Bureau of Investigation, ATF and the Coahoma County Sheriff's Office are helping with the investigation.